Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c7372030f39d773f4a0c664474b785eaa5b572763a535046e5ba561d1d5bb373' 
  AND token = 'alrwrcafTue3tyIaiUHBHdd07GxZbF7uDYqLr9pwWDQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}